Closure for receptacles



June 1 0, 1930.

CLOSURE FOR RECEPTACLES Filed March 28, 1927 INVENTOR L gi /ra Patented June 10, 1930 UNITED STATES PATENT OFFICE WALTER L. RUTKO WSKL-OF ST. LO'U'IS, MISSOURI, ASSIGNOR TO B. 0. CAN COMPANY,

* OF ST. LOUIS, MISSOURI, A CORPORATION'OF MISSOURI CLOSURE ron RECEPTACLES Application filed March 28, 1927. Serial 110. 178,983.

My invention relates to movable end closures for paper receptacles, or receptacles of other fibrous material known to the trade as paper cans. The primary object of my invention is the provision of a metallic closure which when positioned on the open end of a receptacle by pressing it thereon by means of the fingers will be firmly held against accidental rotary displacement and removal from the end of the receptacle.

A further object of the invention is to provide the closure with means for friction ally gripping the wall of the paper receptacle which naturally usually varies in gauge or thickness to prevent accidental removal of the closure therefrom.

The invention viewed in a more limited aspect aims to provide a metallic end closure 20 for paper cans having its side wall provided vith a plurality of circumferentially spaced indendations to provide a plurality of inwardly directed. protuberanaces for slight embedded engagement in the outer face of the paper receptacle when positioned on the end of the receptacle to set up sufficient frictional resistance at several spaced points to firmly hold the closure in position, as against accidental rotary displacement and removal.

A further object of the invention is the provision of a movable end-closure for paper receptacles which possesses advantages in points of simplicity and efficiency, a at the same time proves itself comparatively inexpensive-in cost of manufacture.

A practical embodiment of my invention is presented in. they accompanying drawings forming a part of this specification and wherein like characters of similar parts throughout the several views:

Fig. 1, is a side elevation of a paper receptacle having a removable end closure applied thereto embodying he feature of my invention.

Fig. 2, is a vertical sectional view of the upper portion of the receptacle with the cover applied thereto.

Fig. 3, 1s a sectional view taken on line 3-4; of Fig. 1.

reference denote Fig. 4, is a bottom plan view of the closure. v

Fig. 5, is a vertical sectional elevation of the closure with the indentations in the wall thereof exaggerated.

Fig. 6, is a detail showing the impressions formed in the outer face of the receptacle when applying the closure thereto.

Referring to the drawings, in detail, the reference character 1 represents an ordinary paper receptacle, can, or tube having the usual fixed metallic bottom end closure 2, the opposite, or upper end of the receptacle being closed by the usual metallic slip cover, of closure 3 having the downwardly directed flanged side wall 4 for frictional contact with the outer face of the receptacle.

In carrying out the aim of my present invention, I provide the side wall 4 of the metallic closure 3 with a plurality of circumferentially disposed unbroken indentations 5 which are formed upon the outer face of the wall 4 so as to provide a plurality of inwardly directed protuberances 6, which project inwardly beyond the inner face of the wall 4 of the closure 3, as clearly illustrated in Fig. 5 of the drawings.

The side wall 4 of the closure 3 may have as many indentations 5 formed therein as desired and they may or may not be equally spaced around the wall 4, as desired. The indentations 5 may be of any size, or shape desired, but are preferably formed by means of a conical pointed tool, although not necessarily limited thereto.

Heretofore removable metallic closures for paper receptacles fall off of the open end of receptacle very easily as they must of a necessity be made of such a size as to be easily and quickly a plied to the open end of all receptacles o the same outslde d1- ameter and which receptacles alwa 8 var slightly in outside diameter due to t e var ance in gauge of the paper stock used in forming the receptacles; The usual closure 96 will in some instances fit fairly tight when pressed into position, while on other receptacles of the supposed same outside diameter will fit loosely so that they will easlly fall off of the receptacle, in shipment, in handhng 100 and when placed so that it is moved about such as in tool boxes, especially, when the receptacles are used for containing tire patch material, which of course is only one class of goodswhich are packed in aper receptacles, thus it is not desired as eing understood by that statement to be limiting myself to the use of the closure for packages .containing only tire patch material, but that the closure is adaptable to any receptacle having a removable metallic closure for the open en of the receptacle.

From the foregoing description, it is evident that I provide a metallic closure especially adapted to paper receptacles, which due to the inwardly directed protuberances formed by providing the-wall of the closure with a plurality of indentations upon its outer face will grip, or bite into the outer face of the receptacle when positioning the clo-' sure upon the receptacle thereby slightly embedding themselves into the body of the receptacle for setting up sufiicient frictional resistance to firmly hold the closure in position on the receptacle to prevent accidental removal of the closure from the receptacle from any cause.

From Fig. .6 of the drawing, it will be apparent that when the closure is pressed into position upon the receptacle, that the protuberances of the closure will make slight impressions 7 in the outer face of thebody of the receptacle for setting up the necessary resistance to prevent the closure from being displaced or removed from the receptacle without the assistance of the fingers. The many'advantages of the herein described invention will readily suggest themselves to those skilled in the art to which it appertains. c

I do not wish to be understood as having hunted myself to the exact details of construction shown and described, but desire to have it understood that the invention I have shown in the drawin is merely illustrative, as 1t is manifest tha various minor changes may be, made in the exact construction and part cular arrangement of parts without, departing from the spirit of my inv ntion, hence I reserve the right to'make any such changes, or modifications as may fairly fall within the scope of the appended claims when fairly construed.

What I claim is: 1. In combination with a receptacle made of paper or other fibrous material which naturally varies in gauge, a metallic closure having a side wall for the open end of saidreceptacle and a plurality of .cone shaped indentations formed in. the wall of said closure before applying the closure to the receptacle to provide inwardly directed protuberances adapted for self embedded engagement with the outer face of the wall of the receptacle when positioning the closure thereon.

upon the inner 2. An article ofthe class described com prising a tubular receptacle of paper or other fibrous material which naturally varies in gau e and having an open end, a metallic closure for the open end of said recefptacle, cone shaped resistance offering means ormed face of the side wall of the closure before the closure is ositioned upon the receptacle for self em edded contact with the material of the body of the receptacle when positioned thereon whereb is removabl but securely hel in place against acci ental displacement in any position upon the can. i

3. An article of the class described comprising a tubular receptacle of paper or other fibrous material which naturally varies in gauge and having an open end, a metallic closure for the open end of said receptacle, a plurality of equally spaced circumferentially disposed unbroken indentations formed in the outer face of the side wall of the closure before theclosure is applied to the receptacle to provide a plurality of horizontally disosed conical protuberances directed inwardly beyond the inner face of the side wall of the closure for self embedded engagement in the material of the body of the receptacle by compressing the wall material when position ing the cover upon the receptacle whereby the cover is securely held in place upon the receptacle but manuall removable therefrom.

In testimony w ereof I have hereunto affixed my signature.

WALTER L. RUTKOWSKI.

the cover 

